Properties and Chemistry of Blood Group Substances

Although no complete investigations of the structure of the blood group substances have yet been reported, it is evident from the information available that all the material so far studied is predominantly carbohydrate in nature, and, as can be seen from Table III, preparations from widely different sources have many properties in common, for example, elementary analysis, specific rotation and the like. It is of interest to note that almost all the substances obtained from nonhuman sources display blood group A or blood group O activity, while human material is the most convenient source of the blood group B substance. The majority of the work carried out so far has dealt with blood group A substances. [Pg.45]

Properties of Blood Group Substances from, Various Sources [Pg.46]

Urine Freudenberg et al, (20) Levo 5 9.1 45.5 N-Acetyl-i ucoBanune, n Galactose [Pg.46]

Gastric juice (Human group B) Gastric juice (Human group 0) Witebsky and Klend shoj (22) Witebsky and Klend-shoj (22) 1.5-1.6 2.8 75 39.8 [Pg.46]

Saliva (Horse) Landsteiner (33) +10.0 7.1 9.4 44.6 6.9 56-58 n-Galactose, Hexos-amine [Pg.46]

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